In 2019, the nonprofit Public Employees for Environmental Responsibility (PEER) petitioned the U.S. Court of Appeals for the District of Columbia for an order forcing the National Park Service and Federal Aviation Administration to actually enact the law and develop long overdue plans. On May 1, 2020, the court ordered that all 23 eligible parks submit a plan by Aug. 31, 2022.
Only two of the 23 parks met the deadline. Olympic and Mount Rainier national parks, which according to PEER have minimal air tour traffic, submitted plans in mid-July this year, one day before the court asked the agencies to file a brief explaining delays in plan development across the National Park System.